28888020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{227}}^1$

素因数の和:350

約数の個数: 144

約数和(自身を含む): 101582208

約数和(自身を除く): 72694188

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 101, 105, 126, 140, 180, 202, 210, 227, 252, 303, 315, 404, 420, 454, 505, 606, 630, 681, 707, 908, 909, 1010, 1135, 1212, 1260, 1362, 1414, 1515, 1589, 1818, 2020, 2043, 2121, 2270, 2724, 2828, 3030, 3178, 3405, 3535, 3636, 4086, 4242, 4540, 4545, 4767, 6060, 6356, 6363, 6810, 7070, 7945, 8172, 8484, 9090, 9534, 10215, 10605, 12726, 13620, 14140, 14301, 15890, 18180, 19068, 20430, 21210, 22927, 23835, 25452, 28602, 31780, 31815, 40860, 42420, 45854, 47670, 57204, 63630, 68781, 71505, 91708, 95340, 114635, 127260, 137562, 143010, 160489, 206343, 229270, 275124, 286020, 320978, 343905, 412686, 458540, 481467, 641956, 687810, 802445, 825372, 962934, 1031715, 1375620, 1444401, 1604890, 1925868, 2063430, 2407335, 2888802, 3209780, 4126860, 4814670, 5777604, 7222005, 9629340, 14444010, 28888020]

約数ペア:

[(1, 28888020), (2, 14444010), (3, 9629340), (4, 7222005), (5, 5777604), (6, 4814670), (7, 4126860), (9, 3209780), (10, 2888802), (12, 2407335), (14, 2063430), (15, 1925868), (18, 1604890), (20, 1444401), (21, 1375620), (28, 1031715), (30, 962934), (35, 825372), (36, 802445), (42, 687810), (45, 641956), (60, 481467), (63, 458540), (70, 412686), (84, 343905), (90, 320978), (101, 286020), (105, 275124), (126, 229270), (140, 206343), (180, 160489), (202, 143010), (210, 137562), (227, 127260), (252, 114635), (303, 95340), (315, 91708), (404, 71505), (420, 68781), (454, 63630), (505, 57204), (606, 47670), (630, 45854), (681, 42420), (707, 40860), (908, 31815), (909, 31780), (1010, 28602), (1135, 25452), (1212, 23835), (1260, 22927), (1362, 21210), (1414, 20430), (1515, 19068), (1589, 18180), (1818, 15890), (2020, 14301), (2043, 14140), (2121, 13620), (2270, 12726), (2724, 10605), (2828, 10215), (3030, 9534), (3178, 9090), (3405, 8484), (3535, 8172), (3636, 7945), (4086, 7070), (4242, 6810), (4540, 6363), (4545, 6356), (4767, 6060)]